perf: use cow-utils instead

[heygsc]

We can improve performance by using cow_utils, and automatically check in clippy.

We have done similar work before, and if necessary and possible, I would like to provide pr for boa.

Related issue: oxc-project/oxc#5586

[jasonwilliams]

Hey @heygsc

That sounds great, we would be happy to accept a PR for this, I will assign this issue to you if you're happy to work on it.
CC @CrazyboyQCD who has done similar work on this recently